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Starrtec <br /> ' L & M OPERABLE UNIT-THIRD QUARTER 2010 SITE STATUS, REMEDIAL SUMMARY, <br /> AND GROUNDWATER MONITORING REPORT <br /> Groundwater Monitoring and Sampling <br /> October 27, 2010 <br /> ' 2.3.3.4 Dissolved Metals <br /> Dissolved metals with concentrations detected at or above the MRLs are summarized below. <br /> M <br /> PArsoenicR12014* 0.011 MW-21 0.24 MW-18 <br /> Cadmium 1 14* 0.0011 MW-31 <br /> ' Nickel 1 14* 0.0068 MW-34 <br /> Zinc 3 14* 0.012 (MW-9 &MW-34) 0.019 (MW-21) <br /> Definitions: <br /> ID = Identification <br /> mg/L = Milligrams per Liter <br /> MRL = Method Reporting Limit <br /> ' — = Not Applicable <br /> `=The RDA did not sample during 3Q10 <br /> ' 2.3.3.5 Quality Assurance/Quality Control Samples <br /> TPHd, TPHo, TPHg, BTEX compounds, fuel oxygenates (MtBE, TAME, DIPE, EtBE, TBA), and <br /> ' VOCs were not detected at or above laboratory MRLs within Stantec's equipment blanks <br /> QCEB-1-RG, QCEB-1-RM, QCEB-2-RG, QCEB-2-RM, and QCEB-3-RG. <br /> ' Duplicate samples QCDUP-1, QCDUP-3 and QCDUP-7 were collected from L&M OU shallow <br /> zone wells MW-45, MW-23 and MW-31, respectively, during the third quarter 2010 sampling <br /> event. A comparison of the samples is shown below. <br /> 1 <br /> ' <br /> TPI-Ig (mg/L <0.05 <0.05 0% <br /> TPHd (mg/L <0.05 <0.05 0% <br /> TPHo (mg/L <0.05 <0.05 0% <br /> Benzene (mg/L <0.0005 -0.0005 0% <br /> ' MtBE m /L -0.0005 -0.0005 0% <br /> TBA (mg/L <0.005 <0.005 0% <br /> IAride terATN Stor Wn(Par 2A-0415)1Re ftUMR1201013QlM3010QSSRQRSRQMR Stmkbn_FIN/LLAm 2.6 <br />